When air conditioning in the early running, check whether the compressor oil is clear and transparent without any black degradation; check whether the oil level is normal (about 1 / 3); Check whether there is any looseness or signs of oil leakage at the pipe interface.; check whether there is phenomenon of insulation off connectors and wire; check whether the air flow is consistent with the usual; check whether the belt is loose; check whether evaporator and condenser are dirty. Note: Before the use of air conditioner, the compressor clutch should be running slowly by hand or tool, in order to facilitate oil lubrication and avoid compressor damage when starting the air conditioner. In Summer: Air conditioning is running in peak season, taking one week as the standard, to check whether pipe’s interfaces, check whether the compressor's conditions is normal, check whether the harness is loose and to be tighten the interface; Cleaning file filters, suction filters once a month, which helps air conditioning cooling effect; In Autumn: The use of air conditioning is low season. Mainly to check to ensure the amount of compressor oil and its quality without black deterioration phenomenon. Check whether the pipe connector’s screws are loose; check whether there is oil leakage phenomena. Cleaning once a month file filters, suction filters, to facilitate the use of air conditioning for the wind. In Winter: Winter is the off-season for air-conditioning use. Do not remove the compressor belt in winter; monthly check the compressor oil, forced air cooling system running for more than 10-30 minutes at least once a month to ensure adequate lubrication of the interfaces pipeline system, to effectively prevent parts lubricated parts from lacking of oil .

Due to there is water inside air circulation system, water should be drained timely, if there is dripping, indicating poor drainage, it is needed to clean the drains and dirt timely.